Group B Strep Infection | Overview

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What is group B strep?

Group B streptococcus, or group B strep for short, is a certain kind of bacteria (germ) that lives in the vaginal or rectal areas of about 25% of healthy pregnant women. A woman who has group B strep is said to be "colonized" with this germ. If you are colonized with group B strep, your baby can become infected with these germs while being born and can get sick. There is less than a 1% chance that this will happen, but because group B strep infection is so dangerous for babies, it's important to find out if you're colonized while you're pregnant.

Written by familydoctor.org editorial staff

Reviewed/Updated: 01/11
Created: 09/00

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Group B Strep Infection

Overview

Diagnosis & Tests

Treatment